Excerpt from source: Windows Guest 1.Delete all unnecessary files, empty recycle bin 2.Defragment drive (you might need to do this several times, until you see it “compacted” well) 3.Use sdelete to zero free disk space. Please note that this operation will cause that all drive free space will be filled by zero, so the virtual […]

For workstations/servers that are public Internet facing and do not have a hardware/software firewall solution, use Windows Firewall with Advanced Security and block port 135, 445, 1028 and PING (ICMP 8) . GRC’s Shields Up! shows these ports as being open. Reference: https://www.grc.com/x/ne.dll?bh0bkyd2 http://www.rackspace.com/knowledge_center/article/creating-an-inbound-port-deny-rule-for-windows-firewall-windows-2008